Investors familiar with the matter told The Wall Street Journal that the rocket company SpaceX has agreed to invest a whopping $2 billion in xAI, the Musk-led firm behind the controversial large language model Grok. This investment makes up almost half of the $5 billion of equity that the AI company raised last month.

The money behind Elon Musk’s trillion-dollar empire is increasingly flowing in one direction: toward artificial intelligence.

Elon Musk’s rocket and satellite Internet company SpaceX plans to invest in his generative AI business xAI. The Wall Street Journal reports that SpaceX will pump $2 billion into the Grok company, as part of a broader $5bn round. SpaceX previously loaned money to Tesla and helped fund his acquisition of social media platform X.